Skip to main content
U.S. flag

An official website of the United States government

Return to search results
💡 Advanced Search Tip

Search by organization or tag to find related datasets

Traffic Barrier 2021

Published by Office of the Chief Technology Officer | District of Columbia | Metadata Last Checked: June 27, 2025 | Last Modified: 2022-02-04T00:00:00.000Z
<div style='text-align:Left;'><div><div><p><span style='font-size:12pt'>Barrier: Captures jersey barriers and walls along roads and bridges as linear features. This includes impact attenuators. Where road edges and barriers share the same delineation, the geometry is coincident.</span></p><p><span style='font-size:12pt'>Guardrail: Captures guardrails along roads and bridges as linear features. This includes impact attenuators. Where road edges and guardrails share the same delineation, the geometry is coincident.</span></p><p><span style='font-size:12pt'>Hidden Barrier: Captures hidden jersey barriers and walls along roads and bridges as linear features. Hidden barriers are features that run under other features such as bridges, overpasses, or tunnels and are not fully visible in an aerial photograph. The location is interpreted based on the information visible on either side of the visible feature. Where road edges and barriers share the same delineation, the geometry is coincident.</span></p><p><span style='font-size:12pt'>Hidden Guardrail: Captures hidden guardrails and walls along roads and bridges as linear features. Hidden guardrails are features that run under other features such as bridges, overpasses, or tunnels and are not fully visible in an aerial photograph. The location is interpreted based on the information visible on either side of the visible feature. Where road edges and guardrails share the same delineation, the geometry is coincident.</span></p></div></div></div>

Complete Metadata

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov